Three-throw open split switch



(No Model.; .2 sheets-sheen, 1.

G. L. WORTH & J. B. WYATT. THREE THROW OPEN SPLIT SWITCH.

NO. 403,238. Pat@ ted May 14, 1889.

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2 Sheets-Sheet 2..

(No Model.)

- G. L. WORTH 8v J. B. WYATT.

THEEE THROW OPEN SPLIT SWITCH. No. 403,238. Patented May 14, 1889.

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UNITED STATES PATENT OFFICE.

GEORGE L. WORTH AND JOHN B. NVYATT, OF VYMORE, NEBRASKA.

TH REE-TH ROW OPEN S PLIT SWITCH.

SPECIFICATION forming part 0f Letters Patent No. 403,238, dated May 14, 1889.

Application filed October 22, 1888. Serial No. 288,809. (No model.)

To all whom it may concern.-

Beit known. that we, GEORGE L. WORTH and JOHN B. VYATT, of Wymore, in the county of Gage and State of Nebraska, have invented a new and Improved Three-Throw Open Split Switch, of which the following is a full, clear, and exact description.

This invention relates to three-throw switches, and has for its object to provide a simple, effective, and safe switch of this character.

The invention consists in a three-throw railway-switch, and in certain details of construction and combination of parts thereof, constructed and arranged as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of a railroad-switch constructed in accordance with this invention, showing switch set for one of the sidings. Fig. 2 is a similar plan view, with switch set for the opposite siding from that in Fig 1. Fig. 3 is a longitudinaly section on the line w w, Fig. 1, showing the switch-point connections in crosssection. Fig. 4 is a transverse section of the track and main switch-points on the line Fig. 1. Fig. 5 is a transverse section on the line y y,lFig. 1. Fig. G is a transverse section on the line e e, Fig. 1. 7 and S are details in plan view, with covering removed, of the sliding joint-connection of the ends of the operating-bars for the switch-points.

The main-line rails 1 1, approaching the switch, are curved and inclined outwardly at the switch to form the outside rails, 2 2', of the turn-outs to opposite sides of the main track. The rails 3 3 form the continuation of the main-line rails beyond or at the hinged ends of the inner switch-points, 4 4, which are pivoted at 4 4 next to the ends of main rails 3 3, and when moved int-o line with the rails 3 3 practically form a continuation of the main rails 1 1 and 3 3. Outer switch-points, 5 5, are pivoted at 5 5 next to the ends of the 'fixed siding-rails 6 7, the rail 6 making, with the rail 2 the right-hand turn-out, and the rail 7 making', with the rail 2, the left-hand turnout. The outer switch-points, 5 5, are formed Figs..

with the curved inner side faces or portions, 8, adjacent to their pivotal points, which curved faces 8 iit against the curved side 9 of the pointed end 10 of t-he siding-rails 6 7, and form a close joint for a switch-point, 5, and a siding-rail, 6 or 7, when either switch-point 5 is moved into position to make a turn-out. The inner switch-points, 4 4, are formed with the narrow portion 11, consisting of the head and web of a rail-section with the anges removed, the remaining portion of the switchpointl 4 having its flanges formed with the beveled portions 12, .which alternately lie against the beveled lportion 13 in the inner flange of the outside rails, 2 2', and the beveled portion 1.4 in the outer flange or siding rails 6 and 7. By means of this construction a bearing is provided for the switch-points 4 4 in their different positions, and sufficient space provided between the switch-points 4 and the outside rails, 2 2', when a turn-out is made, or between the switch-points 4 and the ends 10 of the siding-rails 6 7 when the switchpoints are moved to position, to practically form a continuation of main rails 1 land 3 3.

In order to throw the switch-points into proper position, the following described mechanism is preferably employed. The inner switch-points, 4 4, are each connected by one or more cross-bars, and, as here shown, preferably by two cross-bars 15, with the outer switch-points, 5, respectively located the far thest away from its connected switch-point 4-that -is to say, each switch-point 4 is connected with the switch-point 5 on the opposite side of the main track from that on which the switch-point 4 is located. By this means it will be seen that the movement of the switch-points 4 4 will be governed by the operation of the switch-points 5 5. To the switch-points 5 5 are pivoted, at their outer ends, the throw-bars 16 and 17, the inner ends of the throw-bars 16 and 17 resting in a groove, 18, in a casing or guide-frame, 19, se#

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ing the bar 23 to bear against t-he opposite side thereof. The bar 23 is formed with slots or recesses 2G, inclined in opposite directions and located adjacent to the base of lateral projection 25, forming, with its outwardly-inclined sides 27, sockets with inclined bearings for the inclined heads 28 on the ends of throw-bars 16 and 17. The inclined heads 28 are formed with a rear wedge-shaped projection, against the side of groove 18 when the head 28 is located in the recess 2G, and slips into a V-shaped recess, 30, in the side of groove 1 8 in the movement of bar 23. Two of these V-shaped recesses 30 are formed in one side of groove 18, for the wedge-shaped projections 29 of heads 28. The relative arrangement of the heads 28 with the recesses 26 is such that when one of the heads 28is located in its recess 2G, with its rear wedge-shaped projection 29 bearing against one side of groove 18, the other head 28 will be out of it-s recess 2G and bear against the side of bar 23, with its rear projection 29 located in its V- shaped recess 30, as shown in Figs. 7 and 8.

In the position shown in Fig. 7 the right-hand turn-out is made, the switch-points 5 being in the position shown in Fig. 1. In the position shown in Fig. 8 the left-hand turn-out is made, the switch-points 5 being in the position shown in Fig. 2.

The operation of t-he switch is as follows: If the switch be set for the left turn-out, as shown in Fig. 2, with the connecting parts of operating-bar 23 and throw-bars 1G and 17 arranged as shown in Fig. 8, in order to set the switch for the right turn-out the bar 23 is moved to the left by means of switch-lever 24, carrying with it throw-bar 16 until the rear recess 2G of the bar23 is brought in contact with the head 28 of the cross-bar 17, when the rear projection 29 of head 28 of throwbar 16 is brought opposite to its recess 30 and enters the same, the head 28 being forced out of its recess 2G by the wedging action of the inclined slot 2G on the inclined head 28, and the bar 23 moves on over the head 28, leaving the throw-bar 1G at rest. In this position the right-hand switch-point 5 will have been brought from the position shown in Fig 2 to that shown in Fig. 1, and the rightfhand inner switch-point et moved slightly to the left from the position shown in Fig. 2 to that shown in Fig. 1, and the left-hand inner switch-point et moved slightly to the left from the position shown in Fig. 2 to that shown in Fig. 1. In the further continued movement of the bar 23 to the left the throw-bar 17 is carried to the left and moves the left-hand outer switch bar 5 against the left-hand main rail 1, thereby setting the switch for the right turn-out. To set the switch for the left turn-out, the operation of parts just described is reversed. The inward. movement of the throw-bars 1G and 17 is limited by shoulders 31, which are brought to strike against the ends ot' casing 19. To set the switch for the 29, which bears main line, the bar 23 is moved until the rear projections 29 of heads 28 are brought opposite their recesses 30, in which position the outer switch-points 5 are opened, forming spaces between them and their adjacent main rails 1, and the inner switch-points 4 extend in alignment with the main rails 1 1 and 3 3.

The advantages of this invention are as follows: Only one pair of main or outer switchpoints are employed for a three-throw switch. The switch has to be thrown only for the side tracks, the main or outer switch-points normally being open, with the main line clear, and at the saine time permitting trains on the sidings to pass out of either side track onto the main line without operating the switch..

The connecting parts of the switch mechanism are simple, strong, effective, and durable, no springs and intricate mechanism being employed.

Having thus described our invention, what we claim as new,and desire to secure by Letters Patent, is-

1. The combination, with two pairs of switch points pivoted, respectively, to the straight main-line and inner rails of a right and left hand siding, of the throw-bars having laterallyprojecting heads, an operating bar having recesses arranged for a timed en gagement with the heads of the throw-bars, and an operating-lever, substantially as set forth.

2. A railway-switch consisting of main-line rails 1 1 and 3 3, side rails, 2 2', branching outwardly from rails 1 1, fixed siding-rails 6 7, inner switch-points, 4i 4c, pivoted at the ends of main-line rails 3 and located between the ends of siding-rails 6 7, and outside sidingrails 2 2, outside or main switch-points, 5 5, pivoted at the ends of fixed siding-rail 6 7, and bars 15, connecting the inner switch-point, i, on one side of the track with the outer switchpoint, 5, on the opposite side of the track, in combination with throw-bars 1G and 17, connected at one end to switch-points 5 5, and havingvinclined heads 28, with rear projections, 29, located in a groove, 18, in a casing, 19, having V-shaped recesses 30 in the side of groove 18 adjacent to projections 29, and an operating-bar, 23, located in groove 18, and having outwardly-inclined recesses 26, with which the heads 28 are adapted to engage, substantially as shown and described.

3. The combination, with throw-bars 16 and 17, having their inner ends form ed with heads 28, inclined toward each other,with rear wedgeshaped proj eetions, 29, and shoulders 31, limiting their inward movement, and a guide-:trame having a groove, 18, in which the inner ends of throw-bars 1G and 17 rest and are adapted to slide, with V- shaped recesses in the side oi' groove 18 adjacent to projections 29, of a sliding operating bar, 23, proj eeting into groove 18, and having a lateral projection, 25, with inclined sides 27 and bearing against the side of groove 18, and diagonal slots 26,

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adjacent to the inclined sides 27 of projection 25, with which the heads 28 are adapted to engage, substantially as shown and described.

4. A three-throw railway-switch, consisting of main rails l, bent and extended diagonally to form the outside siding-rails, 2 2, the continuation main rails 3 3, inside siding-rails, 6 7, With pointed ends l0 and tapered flange portions 9 and 14,' inner switch-points, 4 4, pivoted at the ends of rails 3 3, and having narrowed portion 1l and tapering iiange portions 12 adjacent to tapering inside dan ge portions, 13, on the outside siding-rails, 2 2', and outside switch-points, 5, with tapering' portions 8, pivoted at the ends of rails 6 and 7, and adapted to bear against the ends of inside siding-rails, G and 7, the outer ends of points 5` being adapted to bear against the main rails l, and cross-bars 15, connecting each inside switch-point 4 With the switch-point 5 on the opposite side of main track, in combination with a throw-bar mechanism which successively acts to throw to position one inside switch-point and one outside switch-point on the opposite side of the main track, and then the other inside switch-point and the other outside switch-point on the opposite side of the main track, substantially as shown and described.

GEORGE L. WORTH. JOHN B. WYATT. v lVitnesses:

Z. S. SAGE, H. M. E. ORUL. 

